Physics Syllabus (JEE Main)

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Q. For a gas at a certain temperature, if the molar mass is halved, what happens to the RMS speed?
  • A. Increases by a factor of 2
  • B. Increases by a factor of sqrt(2)
  • C. Decreases by a factor of 2
  • D. Remains the same
Q. For a gas at a constant temperature, if the molar mass is halved, what happens to the RMS speed?
  • A. Increases by a factor of sqrt(2)
  • B. Increases by a factor of 2
  • C. Decreases by a factor of 2
  • D. Remains the same
Q. For a gas at constant pressure, if the volume is doubled, what happens to the temperature?
  • A. It remains the same
  • B. It doubles
  • C. It halves
  • D. It triples
Q. For a gas at constant pressure, if the volume is halved, what happens to the temperature?
  • A. It remains the same
  • B. It doubles
  • C. It is halved
  • D. It is quartered
Q. For a gas mixture, how is the RMS speed calculated?
  • A. Using the average molar mass of the mixture
  • B. Using the molar mass of the heaviest gas
  • C. Using the molar mass of the lightest gas
  • D. Using the molar mass of the most abundant gas
Q. For a gas with a molar mass of 32 g/mol at 273 K, what is the RMS speed?
  • A. 300 m/s
  • B. 400 m/s
  • C. 500 m/s
  • D. 600 m/s
Q. For a gas with a molar mass of 32 g/mol at a temperature of 300 K, what is the RMS speed?
  • A. 273 m/s
  • B. 400 m/s
  • C. 500 m/s
  • D. 600 m/s
Q. For a gas with molar mass M at temperature T, what is the relationship between RMS speed and molar mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the relationship between RMS speed and molar mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the relationship between RMS speed and molecular mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the RMS speed at 300 K?
  • A. sqrt(3RT/M)
  • B. sqrt(2RT/M)
  • C. RT/M
  • D. 3RT/M
Q. For a given mass, which of the following configurations will have the smallest moment of inertia?
  • A. All mass at the center
  • B. Mass distributed evenly
  • C. Mass at the edge
  • D. Mass concentrated at one end
Q. For a hollow sphere of mass M and radius R, what is the moment of inertia about an axis through its center?
  • A. 2/5 MR^2
  • B. 3/5 MR^2
  • C. 2/3 MR^2
  • D. MR^2
Q. For a monoatomic ideal gas, the RMS speed is given by which of the following expressions?
  • A. sqrt((3kT)/m)
  • B. sqrt((3RT)/M)
  • C. Both of the above
  • D. None of the above
Q. For a point charge, the electric field varies with distance r as?
  • A. 1/r
  • B. 1/r²
  • C. 1/r³
  • D. 1/r⁴
Q. For a rectangular plate of mass M and dimensions a x b, what is the moment of inertia about an axis through its center and parallel to side a?
  • A. 1/12 Mb^2
  • B. 1/3 Mb^2
  • C. 1/4 Mb^2
  • D. 1/6 Mb^2
Q. For a satellite in a circular orbit, which of the following is true about its kinetic and potential energy?
  • A. K.E. = P.E.
  • B. K.E. > P.E.
  • C. K.E. < P.E.
  • D. K.E. = 0
Q. For a satellite in a low Earth orbit, what is the approximate altitude range? (2000)
  • A. 200-2000 km
  • B. 500-10000 km
  • C. 1000-20000 km
  • D. 30000-40000 km
Q. For a satellite in a stable orbit, what must be true about the centripetal force and gravitational force?
  • A. Centripetal force is greater than gravitational force
  • B. Centripetal force is less than gravitational force
  • C. Centripetal force equals gravitational force
  • D. Centripetal force is independent of gravitational force
Q. For a single slit of width 'a', what is the angular position of the first minimum?
  • A. λ/a
  • B. a/λ
  • C. sin θ = λ/a
  • D. tan θ = λ/a
Q. For a solenoid of length L and n turns per unit length carrying current I, what is the magnetic field inside the solenoid?
  • A. μ₀nI
  • B. μ₀I/n
  • C. μ₀I/L
  • D. μ₀nI/L
Q. For a solenoid of length L, radius R, and carrying current I, what is the magnetic field inside the solenoid?
  • A. μ₀nI
  • B. μ₀I/L
  • C. μ₀I/2L
  • D. μ₀I/4L
Q. For a solid disk of mass M and radius R, what is the moment of inertia about an axis through its center and perpendicular to its plane?
  • A. 1/2 MR^2
  • B. 1/4 MR^2
  • C. MR^2
  • D. 3/4 MR^2
Q. For a solid disk of mass M and radius R, what is the moment of inertia about an axis perpendicular to the disk and passing through its center?
  • A. 1/2 MR^2
  • B. 1/4 MR^2
  • C. MR^2
  • D. 3/4 MR^2
Q. For a spherical Gaussian surface of radius R enclosing a charge Q, what is the electric field at a distance 2R from the center?
  • A. Q/4πε₀(2R)²
  • B. Q/4πε₀R²
  • C. Q/4πε₀(2R)³
  • D. 0
Q. For a system of particles, how is the moment of inertia calculated?
  • A. Sum of individual moments
  • B. Product of mass and distance squared
  • C. Sum of mass times distance squared
  • D. Average of all moments
Q. For a system of particles, the moment of inertia is calculated as the sum of the products of mass and the square of the distance from the axis of rotation. This is known as:
  • A. Parallel Axis Theorem
  • B. Perpendicular Axis Theorem
  • C. Rotational Dynamics
  • D. Angular Momentum
Q. For a system of particles, the moment of inertia is calculated by summing which of the following?
  • A. Masses only
  • B. Distances only
  • C. Mass times distance squared
  • D. Mass times distance
Q. For a system of particles, the total moment of inertia is calculated by which of the following methods?
  • A. Adding individual moments of inertia
  • B. Multiplying total mass by average distance
  • C. Using the parallel axis theorem
  • D. Using the perpendicular axis theorem
Q. For a system of particles, the total moment of inertia is calculated by which of the following?
  • A. Sum of individual moments
  • B. Product of mass and distance
  • C. Sum of mass times distance squared
  • D. Average of individual moments
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